I am interested in obtaining the pH reading to be recorded in the computer.
I have tried using DAQ 6211, but all I could get is a huge noisy signal.
but when I connect it to a CRO or DMM, I could get the required.
Could you please help me out with this.
Do I require a preamp to get what I need. If so, please could you suggest me?
or does a differential pH electrode do the work for me?
A typical pH electrode has a very high source impedance. A preamplifier designed to work with pH electrodes is probably the best approach.